Abrading device



March 26, 1929. 1, G, HUDSPn-H 1,707,162

ABRADING DEVI GE Filed March 22. 192'? 2 Sheets-Sheet 2 Patented Mar. 26, 1929.

UNITE sTArss 1,707,163 orifice.

JUGE-PH G. HUDSPITH, 0F SANII'ES' OBLSJ'TPO, CALIFRNIA, AEESSGNOR 0F 0NE-IIALF TO NATHAN S. LEWS, Oli"` SAN LUIS BSLPG, CALIFORNA..

ABRADING DEVICE.

Application tiled March 22 rlhis invention relates to abra ding devices and one of its objects is to provide an abradine: device primarily designed 'for use in wood working and one that is capable oi beingsecured to the arbor or shalt et a circular saw, by merelyv removing the saw andreplacing the saine with niv abrading device.

A further obj ect ot the invention is to provide a novel ineans t'or securing?r an abrading device to a saw arbor, and also to provide an improved niethod oi. .securing the abrasive material such as sand paper or the like to the disk. i

rllhis invention also consists in certain other features oi" construction and in the coinbination and arrangement of the several parts, to be hereinafter fully described7 illustrated in the accompanying; drawings and speciiically pointed out in the l appended cla-iin. i

In describing` my invention in detail, retorence will be had to the accompanying; drawings wherein like characters denote like or corresponding` parts throughout the several views and in which Figure l isa sectional view talrenthrough one torni of inv novel abradinp; device and showing the saine secured to a saw arbor.

Figure Zis a siinilar view of aV niodiiied torni.

liiggure 5% is a persikiective view of the torno oi' the dish as shown in Figure 2.

liigurell is a `itraginie/ntary sectional oit a inodiiied forni oi' dish.

.Figure 5 is a ront elevation of the flor-In as shown in .Figure 2.

Figure 6 is a view partly in section and side elevation oi the n'ieansA for supporting the dish when applying the abrasive material thereto and suriresting` my novel method oi application.

Figure l is a fragmentary top plan View of the dislr supporting` means.

Figure 8 is a perspective view of the disk as shown in Figure 1View @ne iorrn of in v invention is illustrated in Figure l wherein A indicates the arbor oi a circular saw, li the saw table which is provided with a slot C. rlhe arbor A is reduced to provide a threaded spindle as shown which provided with beveled outeredges Zand an 1927. Serial No. 17?;46454.

which secured 'thereto bi adhesive nlaterial such as 1filue and the lille, and 'the novel method et securing the abrasive inaterial to the disk will be presently described. However, it is obvious that by tapering the edges ot the dish the abiL sive material will readily adhere thereto without tear of crackingi or damaging the saine. The abrasive material in this ioriu et the invention is provided with openings aligned with the opening' in the dislrl so that the inner portion oifthe material is disposed between the blocks lil which cooperate with the adhesive material `lier securing' the abrasive inaterial to the disk as will be readily apparent. The disk shown in this :torni oi the invention ro 'ates through the slot C and therefore the table B can be used as a guide means Ylior holding work against the ahradin material and either side ot the dislrniay be used will be obvious.

ln the inodilied torni of abiading` device as shown in ltigure 2 I have also illustrated a inoditied iforin et saw arbor. In this instance the arbor is also provided with a spindle and `a spacing,` block which surrounds `the ent-iro sinooth surface oit the spindle as shown and which provides a stop 'tor the sleeve fi which is threadedljv secured` to the spindle and shou lder .'Ti. struction w it l with the exception that the dish G is lforined with a centrally disposed opening; havingl converging side walls and within which is swedged a projection 8 extending; troni the sleeve l and which is formed with siinilar shaped walls as shown. The projection 8 terminates in alignment with the outer portion oi the disk 6f so that the outer sheet ot abrasive material 9 will cover the entire outer face oit the disk and projection 8 respectivelv.` A nut l0 is threaded to the shoulder 5 and engages the inner portion ot the inner sheet oi ahrasive material which together with the outer sheet secured to thedislr by adhesive inate- Y rial. t

In Figures 6 and 7 I have shown the means for supporting the dislr when applying the adhesive material thereto and said means includes a'base 11 rectangular in formation and l*which is adaptedto be clamped te lt-he saw Y table B by a clamp F of the screw type. 'perimposed upon the 'bas'ef11 and secured thereto through the medium of a screw 12 is a disk shaped bleek 13 having rising ceni trally therefrom a circular stud 14 Which is .of screws 17. .I The abrasive lmaterialused is preferably adapted to -be passed through the opening formed in the disk which reposes upon the block 1 3 in the manner as shown Vin Figure G of the drawings.v Arranged in proximity to Ythe disk blefck'l?) is an arcuate shaped bleek sand` paper, and is termed' in disk formation as shevvn and provided with adhesive en the lunsanded outer edges, and betere the same is applied tothe disks land V(i, the unsanded portionl 1s thoroughly spenged which will alsor moistenfthe adhesive,` ther-paperis then ,applied to the disk which is arranged en the blecksnl?) and 15 asshoivn in Figure G and the overlapping ends 18g-ot the paper ai yrangedin contacting enga-gement and theroughly'tixed together through the medium of the adhesivematerial thereonV by pounding the same a hammer G or other like instruinentfas'suggested. It Willrbe obvious that `T.-v'hen the 'paper or adhesive material dries it will .contract and thereby remain taut upon the dt 1:to provide a pertect abrasive surtace "as will be. obvious. f 40 In Figure t I haveillustrated slightly f modified form er" disk and this form I have Vpre ided serratiens Y 19 on, the beveled edge -iefdisk and theseserratiens Will pass througl'ithe abrading material and. cooperate with fthe adhesive material'tor securing the v same to the disks, but inboth' instances it is necessary that the ends et the abrasive material extend beyond the outer edge et the disk and be secured together as best shown in Figures 1, 2, i and 6.

From the above description and disclosure in the drawings, it Will be obvious that l have provided an abrasive device primarily designed for Wood work and duc te the tact that the structure is adapted to be secured to the arbor of a circular saw, the necessary speed of the device is obtainedr` as it is extremely advantageous in Wood working to have a high speed in order te produce the best linished Work. In the form as shown in Figure 2 the Work can be applied te the entire outer surface et the disk covered vfith the abrasive material, and therefore an extremely large space can be i'inished at a single operation.

lt is thought troni the foregoing description that the advantages and novel features oi' my invention will be readily apparent.

I desire it to be understood that l may make changes in the coiistruction and in thc combination and arrangement ol the several parts, provided that such e ianges tall within the scope of' the appended claim.

lVhat I claim is:

A method oi" making an abrading device cons 'iig et taking a tlexible metallic disk and a pair otsheets et sand paper et disk formation et an area larger than th arca. et the metallic disk, with adhesive material onthe outer edges et the unsanded surtares or the sheets, sponging the unsanded surfaces et the sheets se as to meisten the same and applying the sheets to the. opposite sides ol the metallic disk with the sanded surfaces exposed andthe adhesive carrying edges preecting beyond the outer edge et the metallic disk. arranging the adhesive edges in centacting engagement and allowing the sheets Yto dry so that they Will contract and be drawn.

`tightly about the metalli.v disk.

ln testimony whereof l alix my signature.

JOSEPH (l. HUDFwll'lll. 

